Rear diffuser issues - Pontiac G8 Forum: G8 Forums - G8Board.com
 
LinkBack Thread Tools
post #1 of 20 (permalink) Old 02-27-2017, 11:11 AM Thread Starter
Senior Member
 
eagleknight97's Avatar
 
Join Date: Mar 2015
Location: Glen Ellyn, IL
Posts: 114
Rear diffuser issues

I have a GXP diffuser on the way and need to figure out how to fix a few attachment issues. Since i bought my car 2 years ago, my stock GT diffuser is not attached at 2 points, since at some point in its previous life, they were broken.

Any way i can fix this?

2009 Pontiac G8 GT - Pacific Slate Metallic

Previous Rides
-2009 Colorado Z71 V8
-2003 S10 ZR2
-1997 Camaro Z28

Last edited by eagleknight97; 02-27-2017 at 09:15 PM.
eagleknight97 is offline  
Sponsored Links
Advertisement
 
post #2 of 20 (permalink) Old 02-27-2017, 11:11 AM Thread Starter
Senior Member
 
eagleknight97's Avatar
 
Join Date: Mar 2015
Location: Glen Ellyn, IL
Posts: 114

2009 Pontiac G8 GT - Pacific Slate Metallic

Previous Rides
-2009 Colorado Z71 V8
-2003 S10 ZR2
-1997 Camaro Z28
eagleknight97 is offline  
post #3 of 20 (permalink) Old 02-27-2017, 12:14 PM
Junior Member
 
Join Date: Jun 2016
Location: Austin, TX
Posts: 11
I've got the same issue. My plan is to "try" and repair the area with a plastic welder and some broken plastic pieces I have laying around my garage. If that don't work, I guess I can always drill another hole and zip tie it.
mrod512 is offline  
 
post #4 of 20 (permalink) Old 02-27-2017, 12:27 PM
Senior Member
 
Jova007200's Avatar
 
Join Date: Aug 2011
Location: Charlotte, NC
Posts: 1,515
Garage
Well, there are 3 things you can do.

Search eBay for junk yard listings for that part. You'll find them. It probably wouldn't be expensive, and they'll sell them when they're untouched. That is option 1.

Option 2 is to cut the busted plastic off, and bolt a metal L-Bracket that fits in the spot to the vertical tab. Use a bolt that is large enough to secure the part, but small enough that the hole you drill doesn't compromise the plastic. Then use another bolt to connect the diffuser.

Option 3 is the aforementioned zip-tie....

'09 PSM G8 GT - OPG Intake, DOD-Delete w/ Stage 1C 218/229 .600 Lift 117.5LSA, Kooks 1 7/8 Mids, Solo Axle-Back w/ X-Pipe, SuperPro Bushings (Front and Rear). BMR Sway Bars (Red)
Power: 400HP/392TQ


"If you want to criticize someone else's work, be sure that your own is in order first."

[SIGPIC][/SIGPIC]
Jova007200 is offline  
post #5 of 20 (permalink) Old 02-27-2017, 03:03 PM Thread Starter
Senior Member
 
eagleknight97's Avatar
 
Join Date: Mar 2015
Location: Glen Ellyn, IL
Posts: 114
Quote:
Originally Posted by Jova007200 View Post
Well, there are 3 things you can do.

Search eBay for junk yard listings for that part. You'll find them. It probably wouldn't be expensive, and they'll sell them when they're untouched. That is option 1.

Option 2 is to cut the busted plastic off, and bolt a metal L-Bracket that fits in the spot to the vertical tab. Use a bolt that is large enough to secure the part, but small enough that the hole you drill doesn't compromise the plastic. Then use another bolt to connect the diffuser.

Option 3 is the aforementioned zip-tie....
For option 1, what part are you referring to? As far as i know, the spare wheel tub is bonded to the metal and isn't really removable.

2009 Pontiac G8 GT - Pacific Slate Metallic

Previous Rides
-2009 Colorado Z71 V8
-2003 S10 ZR2
-1997 Camaro Z28
eagleknight97 is offline  
post #6 of 20 (permalink) Old 02-27-2017, 03:04 PM
Senior Member
 
Jova007200's Avatar
 
Join Date: Aug 2011
Location: Charlotte, NC
Posts: 1,515
Garage
Yeah, you're right. I posted that in a flurry and was thinking backwards..... it happens sometimes.

'09 PSM G8 GT - OPG Intake, DOD-Delete w/ Stage 1C 218/229 .600 Lift 117.5LSA, Kooks 1 7/8 Mids, Solo Axle-Back w/ X-Pipe, SuperPro Bushings (Front and Rear). BMR Sway Bars (Red)
Power: 400HP/392TQ


"If you want to criticize someone else's work, be sure that your own is in order first."

[SIGPIC][/SIGPIC]
Jova007200 is offline  
post #7 of 20 (permalink) Old 02-27-2017, 03:25 PM
Senior Member
 
Markmsf3's Avatar
 
Join Date: Dec 2015
Posts: 702
Yeah, I'd drill 2 small holes on each piece if there is enough space not too close to the existing holes and use 2 zip ties on each and cinch them down and cut the tails off. That way, it could easily be removed if need be.

09 WH GT
Sport/Premium
Onyx/Red
Rotofab CAI
Cortex 93 tune
20% tint


I just wanted one.
Markmsf3 is offline  
post #8 of 20 (permalink) Old 02-27-2017, 03:50 PM
Senior Member
 
Join Date: Jan 2009
Location: SW Ohio
Posts: 791
92253748 is the GM repair kit part number for those.

[SIGPIC][/SIGPIC]
Rotohack 102 intake - 102 MAF -TPIS 102 TB - TVS1900 ported 8 rib 2.5" front + OD rear cog - RCR ported heads - Lunati 219/231 113+1
Kooks 1 7/8 LT - Solo 3" CB - 3.27 diff w WaveTrac - MT DRs + M&H FRs on Weld RT-S - CTS-V fuel w Vaporworx - Alkycontrol meth M15 + M10 - RCR tune
Old [email protected] 1.51 60'
New ? @ ?
TooManyHobbies is offline  
post #9 of 20 (permalink) Old 02-27-2017, 04:26 PM Thread Starter
Senior Member
 
eagleknight97's Avatar
 
Join Date: Mar 2015
Location: Glen Ellyn, IL
Posts: 114
Quote:
Originally Posted by TooManyHobbies View Post
92253748 is the GM repair kit part number for those.
How does that work? Any pictures?

2009 Pontiac G8 GT - Pacific Slate Metallic

Previous Rides
-2009 Colorado Z71 V8
-2003 S10 ZR2
-1997 Camaro Z28
eagleknight97 is offline  
post #10 of 20 (permalink) Old 02-27-2017, 07:48 PM
Senior Member
 
JimmyJazz's Avatar
 
Join Date: Sep 2008
Posts: 225
You can make a stud by cutting off the head off of a screw/bolt's . J.B. weld that in what's left on the car, and bolt it on.

'09 Pacific Slate G8 GT,1900 Magnacharger cog drive. Engine rebuilt by Texas Speed and Performance with some very nice parts. Airaid intake, Kooks 1 7/8" lt's, cats, midpipe, SLP PowerFlow exhaust. Pedders lowered touring package. Baer Pro front brakes. ForgeStar F14 GunMetal 19x8.5 Michelin Pilot Sport a/s. '78 El Camino. 2008 model Blue Heeler.
JimmyJazz is offline  
post #11 of 20 (permalink) Old 02-27-2017, 11:44 PM
Senior Member
 
Join Date: Oct 2015
Posts: 174
Use Q-Bond? Weld in another piece of plastic there.
eqs_g8gt is offline  
post #12 of 20 (permalink) Old 02-28-2017, 05:46 AM
Senior Member
 
Join Date: Jan 2009
Location: SW Ohio
Posts: 791
Quote:
Originally Posted by eagleknight97 View Post
How does that work? Any pictures?
The pieces in that kit are bonded into place with adhesive. No pictures since I have never needed to use them. I just knew the kit existed and wanted to let the OP know that there is an "official" fix for this.

[SIGPIC][/SIGPIC]
Rotohack 102 intake - 102 MAF -TPIS 102 TB - TVS1900 ported 8 rib 2.5" front + OD rear cog - RCR ported heads - Lunati 219/231 113+1
Kooks 1 7/8 LT - Solo 3" CB - 3.27 diff w WaveTrac - MT DRs + M&H FRs on Weld RT-S - CTS-V fuel w Vaporworx - Alkycontrol meth M15 + M10 - RCR tune
Old [email protected] 1.51 60'
New ? @ ?
TooManyHobbies is offline  
post #13 of 20 (permalink) Old 02-28-2017, 08:25 AM
Senior Member
 
Jova007200's Avatar
 
Join Date: Aug 2011
Location: Charlotte, NC
Posts: 1,515
Garage
GM Parts Direct shows the drawings (which others probably do too)... That should be sufficient to see how they'd go over the existing tab.

Nice find. Pricey, but it is what it is.

'09 PSM G8 GT - OPG Intake, DOD-Delete w/ Stage 1C 218/229 .600 Lift 117.5LSA, Kooks 1 7/8 Mids, Solo Axle-Back w/ X-Pipe, SuperPro Bushings (Front and Rear). BMR Sway Bars (Red)
Power: 400HP/392TQ


"If you want to criticize someone else's work, be sure that your own is in order first."

[SIGPIC][/SIGPIC]
Jova007200 is offline  
post #14 of 20 (permalink) Old 02-28-2017, 12:20 PM
Senior Member
 
Join Date: Apr 2007
Location: Central Illinois
Posts: 2,679
Yeah, super pricey. Over $100 for a little thin bracket? Drill a hole and zip tie it, man.

I bet I could draw up some simple plans and have someone make a big load of them for half the price for each one, probably a lot less.

2009 SRM GT - Premium, Sport, Sunroof - HSV triple gauges and trim, HSV Supersport Red/Black Steering Wheel, GXP rear sway bar, GXP Diffuser, Rotofab, SOLO Axlebacks, Magnaflow Cats, Red Hot shift knob, Autodim mirror, Removed intake cover, Chrome lug nut covers, Infinity door speakers, 10" DVC RF Sub, Switchbacks, Slotted rotors & Braided stainless brake hoses, Cortex tuner



Admin: www.pontiacbonnevilleclub.com
J Wikoff is offline  
post #15 of 20 (permalink) Old 02-28-2017, 12:58 PM
Senior Member
 
Jova007200's Avatar
 
Join Date: Aug 2011
Location: Charlotte, NC
Posts: 1,515
Garage
Why draw up plans when you already can find simple drawings? And why have someone else fab it when you could easily do it yourself for free???

Just sayin......

'09 PSM G8 GT - OPG Intake, DOD-Delete w/ Stage 1C 218/229 .600 Lift 117.5LSA, Kooks 1 7/8 Mids, Solo Axle-Back w/ X-Pipe, SuperPro Bushings (Front and Rear). BMR Sway Bars (Red)
Power: 400HP/392TQ


"If you want to criticize someone else's work, be sure that your own is in order first."

[SIGPIC][/SIGPIC]
Jova007200 is offline  
post #16 of 20 (permalink) Old 02-28-2017, 08:23 PM
Senior Member
 
alchargo's Avatar
 
Join Date: Jul 2011
Location: NW Iowa
Posts: 133
This info is from ALLDATA:

Bulletin No.: 11-08-62-001

Date: May 03, 2011

Subject: Information on Wheel Well Repair Kit

Models:
2006-2011 Chevrolet Caprice (including PPV), Lumina (VE/WM Models)
2008-2010 Pontiac G8

A service kit has been released that allows the repair of the rear fascia to wheel well lower mounting points on all VE/WM variants as shown below.

The fixing points may break due to impact damage and as the spare wheel tub is made from a fibre reinforced material, they are unable to be reliably repaired with plastic welding or other methods.

The kit, Part No. 92253748, includes three metal brackets, which can be affixed to provide a renewed mounting point. Refer to the image below. The kit also contains detailed fitting instructions.
Attached Images
File Type: jpg 173581710.jpg (35.1 KB, 21 views)
File Type: jpg 173581711.jpg (34.3 KB, 20 views)

2009.1 White Hot G8 GT
alchargo is offline  
post #17 of 20 (permalink) Old 03-01-2017, 09:39 AM
Senior Member
 
Join Date: Apr 2007
Location: Central Illinois
Posts: 2,679
Quote:
Originally Posted by Jova007200 View Post
Why draw up plans when you already can find simple drawings? And why have someone else fab it when you could easily do it yourself for free???

Just sayin......
I don't have means to accurately cut metal. Do you? I mean, I have tin snips. Maybe that would work for what is needed.

2009 SRM GT - Premium, Sport, Sunroof - HSV triple gauges and trim, HSV Supersport Red/Black Steering Wheel, GXP rear sway bar, GXP Diffuser, Rotofab, SOLO Axlebacks, Magnaflow Cats, Red Hot shift knob, Autodim mirror, Removed intake cover, Chrome lug nut covers, Infinity door speakers, 10" DVC RF Sub, Switchbacks, Slotted rotors & Braided stainless brake hoses, Cortex tuner



Admin: www.pontiacbonnevilleclub.com
J Wikoff is offline  
post #18 of 20 (permalink) Old 03-01-2017, 09:55 AM
Senior Member
 
Join Date: Feb 2010
Posts: 1,114
Quote:
Originally Posted by eagleknight97 View Post
How does that work? Any pictures?
https://www.google.com/search?q=9225...ih=878#imgrc=_

#754 of 1829: GXP
#23 of 67: LR, M6, Roof, Onyx/Red
#22 of 37: Summer-only Potenza tires
GXP25 is offline  
post #19 of 20 (permalink) Old 03-01-2017, 10:24 AM
Senior Member
 
Jova007200's Avatar
 
Join Date: Aug 2011
Location: Charlotte, NC
Posts: 1,515
Garage
Quote:
Originally Posted by J Wikoff View Post
I don't have means to accurately cut metal. Do you? I mean, I have tin snips. Maybe that would work for what is needed.
Normally, I'd fab something up if I could. It depends on how it needs to fit. It does depend on what tools you have, though....

For something like this, there's bound to be a solution at the local hardware store. Thing is, it would be unofficial and unsanctioned by GM..

'09 PSM G8 GT - OPG Intake, DOD-Delete w/ Stage 1C 218/229 .600 Lift 117.5LSA, Kooks 1 7/8 Mids, Solo Axle-Back w/ X-Pipe, SuperPro Bushings (Front and Rear). BMR Sway Bars (Red)
Power: 400HP/392TQ


"If you want to criticize someone else's work, be sure that your own is in order first."

[SIGPIC][/SIGPIC]
Jova007200 is offline  
post #20 of 20 (permalink) Old 03-01-2017, 04:11 PM
Senior Member
 
Join Date: Sep 2013
Posts: 105
I may be wrong but I thought I remember seeing brand new diffusers for around $200 ?
maxspeed96ct is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Pontiac G8 Forum: G8 Forums - G8Board.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome